Well, if you don't have other armors, I suggest, like slapshot says...Use its slow advantage to your own. And...If you're already 2*...If you want to use the easy way, make Kut-Ku Stave, find an area it(I don't know what to call it...)stays where you can find a ledge, and fire away!(The ledge protects you from all of its attacks. Just don't stay too close to the edge.)Except if you don't want that way, then use your GS and use your charge on your advantage to its slow movement(Beware at Rage, it can still move quite fast. AND BLOCK THE ROAR. If you don't...Well...Experience a world of pain..)and use your charges. It's weak to Fire, so that I suggest YKK Stave...Well, it's up to you to pick your weapon of choice...Good luck!

If you don't block the scream in time, make sure you are close to khezu. Usually, it does a leap right after the scream and the leap will miss you while you are crouched down protecting your ears. Sometimes, he does spit lightning balls - Its a gamble.

Use a vesproid gunner set.since kezu is slow you can easily dodge it try to make the lady bug heavy gun. i think your equipment is enaf to kill kezu -THeres a certain place that a kezu cant reach ise that as your advantage

The first time i fought a khezu i used the Giaprey armor set with a black katana. He went down really fast. I just ket using two triangle attacks and a triangle+circle attack on one of his legs. He kept using his electric shield because I stayed so close to him... When in rage mode i just kept evading his electric leap and landed a few hits afterwards... If you concentrate all the attacks in one leg he will fall quickly, use the spirit bar attacks when he is in the ground... took me about 10 min...